Help:Infobox

An infobox is a fixed-format table (often with 2 columns) to be added to the top right-hand corner of article pages. An infobox shows a summary of some common data that the articles share and sometimes to improve inter-page navigation to other article pages. The generalized infobox feature grew out of the original taxoboxes (taxonomy infoboxes) that editors developed to visually express the scientific classification of organisms.

Infobox templates have important facts and statistics of a type which are common to related articles. For instance, all animals have a scientific classification (species, family and so on), as well as a conservation status. Adding a {{taxobox}} to articles on animals therefore makes it easier to quickly find such information and to compare it with that of other articles.

Infobox templates are like fact sheets, or sidebars, in magazine articles. They quickly summarize important points in an easy-to-read format. However, they are not "statistics" tables in that they (generally) only summarize material from an article—the information should still be present in the main text, partly because it may not be possible for some readers to access the contents of the infobox. In particular, if infobox templates hide long columns of data inside collapsing tables, which means readers using assistive technology may miss their presence entirely.

Sometimes infoboxes may contain abbreviations or other forms not included in the lead text. If so, then search engines may excerpt the infobox rather than the lead when searched with such text. So it's a good idea to have text in the infobox appear in the main page, but then such infoboxes have been accused of being less informative (see WP:disinfoboxes).

Comparable. If a lot of different subjects all share a common attribute (for instance, all people have a name and a date of birth), then it is useful to be able to compare these across different pages. This also implies that where possible, material should be presented in a standard format.

Concise. Infobox templates are "at-a-glance", and used for quickly checking facts. Long bodies of text, or very detailed statistics, belong in the article body.

Directly relevant to the subject. A common problem is including material which is trivial and would not otherwise be included in the article body: for example, a fictional character's blood type may be referenced in passing in a work, but it is not especially useful to understanding the subject. Infobox templates should not be used for detail which is trivial to the point that if it were placed in the article body it would be removed. Furthermore, as mentioned above, some users may not be able to access the contents of the infobox and so would not be able to access this material in that case.

Infoboxes are an extension of MediaWiki's template feature, and as such their implementations are kept in the Template namespace. There are two ways that editors typically want to access the underlying details of an infobox:

Second (and more commonly), when an editor is inspired by an infobox in a particular article, he or she can map the infobox onto its template implementation in the Template namespace.

For example, the article "D-Terminal" contains an infobox. Simply edit the article page to determine which one:

{{Infobox connector
...
}}

The start of the template identifies the markup between the enclosing braces as an infobox instance. While the next word identifies the specific kind of infobox (in this case the "connector" infobox), the underlying template is still located in the Template namespace under Template:Infobox connector.

Infoboxes should have a documentation page that contains a convenient "blank" template that can be copied directly into the target article. The template consists of opening ({{) and closing (}}) double braces that contain the name of the infobox and a list of parameters without values. An editor then fills in the value for each of the parameters to the right of the corresponding equals sign.

In this example, the names of the parameters ("name", "image", "caption", "website") are fixed in the design of the infobox and described in its documentation. A parameter that is misspelled or is not supported by the infobox implementation does not display at all.

The infobox documentation describes which parameters are required and which are optional. Required parameters display between triple braces (for example, {{{requiredparametername}}}) when previewed or saved. Optional parameters may be left empty or omitted entirely.

It is a good idea to seek the opinions of other editors before embarking on a design of a new infobox or redesign of an existing one. Most requirements are already met by an existing infobox and most of the remainder can be met with a tweak. Unnecessary duplication leads to clutter and article divergence. Prototype your new design in your own user space. Once prototyped, propose the infobox changes to the appropriate WikiProject and gain consensus before deploying your new design in the template namespace.